Examine source code of Pixiv Mix

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Pixiv Mix",
  "manifest_version": 2,
  "description": "Original pictures from\n- Hisasi: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/43d59dde4421f9fa10028b67ef7b76c4e5a496c968982120cbce5cd733a63319/http%3A//www.pixiv.net/member.php%3Fid=119045\">http://www.pixiv.net/member.php?id=119045</a>\n- Okitakung: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/52a00cfc836a7f19057f5121e44fa121e0f6b3d57430dc6a1ed2aa925d231ef0/http%3A//www.pixiv.net/member.php%3Fid=1267809\">http://www.pixiv.net/member.php?id=1267809</a>\n- Tomose Shunsaku\n- Cygnus: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/af65d71109175d14b49a6347e68169c810ecdd589fda636015b8a93b6105fcf9/http%3A//www.pixiv.net/member.php%3Fid=634595\">http://www.pixiv.net/member.php?id=634595</a>"
}